12 42 500 Replacing positive battery cable between starter motor, alternator and positive battery connection point (N55)

Necessary preliminary work

Fold back cover (1).

Release nut underneath. Remove positive battery cable (2) from positive battery connection point.

Tightening torque: 12 42 3AZ .

Fig 1: Identifying Back Cover And Positive Battery Cable

Courtesy of BMW OF NORTH AMERICA, INC.

Remove protective cap (2) and release nut underneath.

Tightening torque: 12 42 1AZ .

Disconnect positive battery cable from alternator.

Fig 2: Identifying Protective Cap And Alternator Positive Battery Cable

Courtesy of BMW OF NORTH AMERICA, INC.

Unclip positive battery cable (1) from holder (2).

Fig 3: Identifying Alternator Positive Battery Cable And Holder

Courtesy of BMW OF NORTH AMERICA, INC.

Release nut (2) on starter motor only .

Tightening torque, 12 42 2AZ .

Remove positive battery cable from starter motor and pull out.

Fig 4: Identifying Starter Motor Mounting Nut

Courtesy of BMW OF NORTH AMERICA, INC.

NOTE: Reassemble the vehicle.
Check stored fault messages.
Delete fault memory.